Daylight-loading photographic-roll holder.



Patented Mar. 4, I902.

TON,

04V/0 H. H0115 D. H. HOUSTON.

DAYLIGHT LOADING PHO-TDGRAPHIC ROLL HOLDER.

(Apphcatwn filed Jan 28 189B No. 694,92l.

(.Ilo Model.)

Vfiinasses:

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Unrrno STATES DAVI D DAY H3 EEPECIFIOATIQN 5031111" To (tZZ whom it mayconcern.-

Be it known that I, DAVID H. HOUSTON, a citizen of the United States,residing at Hunter, in the county of Cass and State of North Dakota,have invented certain new and useful Improvements in Daylight-LoadingPhotographic-Roll Holders; and. I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to maize and usethe same.

This application is a division of the application filed by me on March12, 1897, Serial No. 627,094, for photographic-roll holders.

My invention relates to an improved photographic-roll holder in whichare used cartridges of sensitized film.

The object of my invention is the provision of aseparable spool-holdingroltholder for use in cameras, said roll-holder having a front slide toexclude light from the sensitized film when the roll-holder is separatedfrom the camera, so that plate-holders can be used interehan geabl ywith the roll-holder. M y rollholder has one compartment for holding thespools of sensitized film and a sight-aperture positioned in and throughthe film-support board in any suitable position; but I prefer to place awalled sight-passage through the top of the roll-holder casing, saidsight-passage leading to sightaperture in the fitnsupport board andbeing so arranged that a good light can he obtained in the passagewayleading to the sight-apertu re through the film-support board, so as toallow of indicia being observed and indicate the position of thesensitized film in the roll-holder,

My invention consists of a daylight-loadingphotographic-roll holderofmproved construction suitable for using spools of eartridge film andhaving a sight-aperture through the film-support board of therollholder; and it has combination or parts which are hereinafterdescribed, and the novel features pointed out in the claims of thespecification.

in the drawings w" ich form part of this specification similarcharacters of reference denote similar parts.

Figure 1 represents a perspective view of my roll-holder, taken from therear, Fig. 2

I part of Letters Patent a: :1), 694,921, dated March 4,

PATENT OFFIQE;

HUNTER, NORTH DAKOTA.

:RAPHiC-ROLL HGLDER.

Divided and this application filed January 28, 93.

(N0 model.)

represents a central vertical transverse sectional view of theroll-holder. Fig. represents a horizontal sectional view taken on theline X X of Fig. 2 and showing a section through the walledsight-passage leading to the sight-aperture of the roll-holder. Fig. 4:represents a vertical sectional view taken lengthwise of the casing onthe line Y Y of Fig. and showing a section through the walledsight-passage leading to the sight-aperture of the roll-holder. Fig. 5represents a vertical sectional view taken lengthwise of the casing andshowing a modified construction having a sight-passage in the bottom ofthe roll-holder casing.

In the drawings, A designates the casing, which has in its top a sightpassage-way B, which passage-way may have walls 0 and a bottom 0. In theinterior of the casing near the front thereof is thetilm-snpportD,through which film-support there is a sight-aperturecovered with a transparent plate E, made of material such as celluloidslightly colored and adapted to exclude actinic rays of light andprevent the light from detrimentally effecting the sensitized film bypassing through the sightaperture.

in the roll-holder are the film-spool F and the reel-spool F", whichcarry the sensitized film, and said spools are centered on thespoolcentering devices P. The rounded'guides G are positioned near tothe opposite interior front corners of the one-compartment rollholdingcasing, and the sensitized film should be passed around the said roundedguides and in front of the film-support D.

Sliding in the slot H at the front side of the roll-holder casing is theslide J, which when withdrawn allows the sensitized film to be exposedto the rays of light coming from the view through the lens after theroll-holder hasbeen placed in the camera and the shut ter of the lensoperated In the rear side of the roll-holder casing there is a door K,which door is adapted to he opened to and allow of access to the interior of the casing.

From this description, taken in connection with the drawings, theconstruction of my roll= holder invention can be readily understood,

In operating the roll-holder it is applied to a camera in the samemanner as a plateholder, and the roll-holder is prepared for use byopening the casing of the roll-holder and placing a spool of sensitizedfilm in position on the spool-centering devices, then by passing thesensitized film around in front of the rounded guides and in front ofthe filmsupport board andsight-aperture of the rollholder, and byconnecting the wrapper of the sensitized film to the reel-spool. Thefront slide and the rear door are then closed, and the sensitized filmmay be wound forward until the first number, letter, or iudicia appearsopposite to the sight-aperture, denoting that the sensitized film is inposition for the first exposure upon a View. The winding forward of thefilm is done upon the reel-spool by turning it with a winding-key in thedirection shown by the arrow-mark, and if by accident the film is Wounda little too far it can be readjusted back by simply placing awinding-key upon the shaft of the supply-spoolcentering device andwinding backward, meanwhile observing at the sight-apertu re for theindioia that indicate the movement of the sensitized film.

From the foregoing description it can be understood that I provide aphotographic-roll holder of improved construction, and that my improvedroll-holder is adapted to be used interchangeably with plate holders inthe same camera, and that my invention is a decidedly practicalroll-holder having a film-support board,and a sigh t-aperture leadingthere:

through, and a true division of my former application.

I claimg 1. In a photographic-roll holder the combination of a casinghaving a sight-opening'in its top, a film-support board in theroll-holder casin g, the said film-support board having a sight-aperturetherethrough, said casing and said film-support board connected by wallsforming a sight-passage through the top of the casing and through thefilm-support board, whereby visual observation can be had from theoutside of the roll-holder casing through the film-support board.

2. In a photographic-roll holder the c0mbination of a casing having afront opening, a

nation of a casing having a front opening, a

slide in said front opening, rounded guides for the sensitized filmpositioned at opposite interior ends of the casing, a film-support boardhaving a sight-aperture therethrough, said film-support boardpositionedin line between the rounded guides, one chamber only for holding thesupply and reel spools, spool and reel cen teringdevicesinthe saidchamber,

the roll-holder casing'having a sight-passage leading from-the outsideof the casing through to the said sight-aperture in the said filmsupportboard, said sight-passage adapted to allow of the observation ofindicia, and a door in the rear of the casing.

4. In a photographic-roll'holder the combination of a casing having afront opening, a slide'in said front opening, rounded guides for thesensitized film, said rounded guides" positioned near to the frontinterior corners of the roll-holdercasing, a film-support boardpositioned in line between the said rounded guides,said film-supportboard having a sightaperture therethrough, one chamber for holding thespools of sensitized film, supply-spool and reel-spool centering devicesin the said chamber, the roll-holder casing having an incasedsight-passage lead'ing from the outsideof the'casin g through a suitablepart thereof and leading to a sight-aperture through the filmsupportboard of the roll-holder, whereby indicia can be observed through thesaid incased sight-passage, and a door in the rear of the casing. V

' DAVID H. HOUSTON.

Witnesses:

T. E. J ONES, GEO. T. WALKER.

